TypeError: Property consequent of ConditionalExpression expected node to be of a type ["Expression"] but instead got null
at Object.validate (/home/forum/nodebb/node_modules/babel-types/lib/definitions/index.js:109:13)

I hope you will figure out, how to solve this issue at least for fresh installs.

After i do this, everything is OK, no errors.
Then i choose Oxide theme in admin panel and do "rebuild and restart". No matter, how i do this, via admin panel or with shell command "./nodebb upgrade && ./nodebb restart" the same error appears during build, when Oxide theme is selected.

Hi NodeBB community,
I'd certainly be interested in producing a NodeBB forum, but displaying subcategories as @mxngyn asked above is definitely an interest of mine.
Please, if you know how to solve this, I'd love to know.